Pump



June 18, 1929. M. KRAuT 1.717.694

PUMP;

-Filed Aug. 26, 1926 2 Sheets-Sheet 1 INVENTOR Z A B//%Z7/% A TTOR/VZZ'Y M. KRAUT' June 18, 1929.

PUMP

,F'iled Aug. 26, 1926 v 2 Sheets-Sheet 2 11v VENTOR 7% A TTORNEYPatented June is, 1929.

UNITEDTSTATES 1 MAX KRAUT, or SAN FRANCISCO, CALIFORNI'A,1ASS1ZG1\I0R oE x m -b SAN FRANCISCO, CALIFORNIA. I

PUMP.

Application filed August 26, 1926. Serial No. 131,606.

either centrifugal or positive pressure pump,

due to its liability of cutting out thebearings.

One of the principal objects of this invention is to provide aconstruction so designed as to prevent while in operation the grittymaterial from working into the bearings, thus obviating therapid wearingof the bearings and destruction of the bearings and shaft from thiscause.

, Another object isthe designing of a pump to handle gritty0rsl1my'material containing designed as to reduce to a minimumtheliability of the same becoming air bound ;-to provide a pump theshaft ofwhich is capable of being disposed either horizontally or vertically,andwhen in either position, the operation of the runner of whichprecludesthe.

gritty material from attacking the bearing or shaf.

Other objects are the designing of a simple and economical constructionarranged to permit a ready and quick replacement of worn parts or theadjustment thereof, and to pro- 7 vide a pump wherein is utilized to thefullest extent the power applied towards its.

object.

Vith the above mentioned and other objects in view, the inventionconsists in the novel construction and combination of parts hereinafterdescribed, illustrated in the ac- ,companaying drawings and pointed outin the claims hereto appended; it being under stood that various changesin the form, proportion, size and minor details of construc- 'tionwithin the soopeof the claims may be resorted to without departing fromthe spirit or sacrificing any of-the advantages of the invention. 7 r fReferring to the drawings forming a part ofthis application-- Fig. 1 isa longitudinalcentral sectional view through'the preferred embodiment of'my apparatus.

Fig.2 is a view in elevation of the runner as being removedfrom thecasing.

provided with the conical end, and illustrated Fig. 3 is a verticalsectional view through the runner taken on lines of Fig. 1.

line t-4 of Fig. 1. Y i

c Fig. 4 is a vertical sectional View taken on I, In the drawings,wherein like characters of reference designate corresponding partsthroughout the several v1ews,,1 is a base upwardly from which extend thebearing arms 2 and the shell supporting arm 3. The arm 3 mounts acylindrical runner shell-4 having a' r flanged edge 5, and connectedwith said runner shell 4; is a hollow'conical shell body 6 inwardly fromthe; inner surface of which,,to- -c ward the center of the runner shell4, extends I i y i iml'fiange 7. The shell body 6 and air or gases inthe'solution, the pump be ng so bearing arm 2 and throughithe shellbody6" i and runnershell 4 is abearing sleeve 8 carrying at its oppositeends the bearingsv 9 and 10.

The bearing arm 2 at its upper end also carriesa bearing 11, in linewiththe bearings'9 and 10, and in said bearings is 'rotatably mounted apower shaft 12 carrying a power pulley 13 between bearings 9 and 11. Theshaft 12 extends tliroughthe sleeve 8, as illustrated in the drawings. ai 1 i Communicating with the shell body .6 a

fluid inlet lehthe same discharging into the space 15 between the sleeve8 and flange 7,

and the fluid passing endwise from said space through a number ofopenings 16, illustrated I in detail in Figsa3 and 4. i Bolted, to theflange '5 of the cylindrical runner shell is a conical shell extension17,,

the-apex ofpwhich is provided with a disk charge opening'18 to thefiange 19 of which is bolted the elbow ofa discharge pipe '20..

Keyedas at'2l to the end of the shaft 12 and positioned within theconical shell17' is a hollow conical runner extension22, the peripheralsurface of which lies parallel with the inner surface of the shell 17and carries a plurality of helical ribs 23 extending from the apex tothebasethereof, Theextension 22at its base is secured to the side wall24: P

of a cylindrical runner 25 of the conventional closed type; The runner25 rotates within the shelld as in Fig. 1, andbetween its walls 24 and26 is provided with the usual blades 27,

the inlet thereto being through the openings 16 into the center of therunner and the discharge therefrom being peripherally of the runnerbetween the wallsl? and 22. From the rear face of the runner shell wall26 extends a flange 28 disposed parallel with the wall 6 and providedwith a flange .29 dis posed parallel with the wall 26 of the runner.

The wall 24 adjacent'the inner periphcryof j e the conical extension'22is provided with a I plurality of spaced drain'ports30, Fig. '1.

The inner surface of the wall of the extension 22 is substantiallyparallel with the outer surface and flarestowards the base of theconical shell. 1

In p n, the pipe or inlet 14} is connected with the fluid'supply to bepumped and the elbow to a placeof deposit or delivery to receivethepumped material. The pulley 1 13 is rotated to revolve the runner'25 inthe direction of the arrow, Fig.3,"and such move- 'ment' causes arapid-rotation of the runner 25. and its conical extension-.22. This acton :causes the fluid {t0 enter'the space 15'and through openings16topass into the runner I 25. The velocity andcentrifugal forceim- -partedtothe fluid by'the vanes 27 forces the fluid towardsfthezperipheryof therunner ,andthrough the annular space between the 1 V 'baseof' theconical extension 122'and the peripheral wallof the, runner where it ispicked up by'thehelicalribs 23 and. con- -veyed towardsthe apexof theshell 17 in the 'space between the walls Hand 22.

Th'e'positive action of the members 23 in picking the liqu'idor fluid-upfrom the pe-' riphery' of the 1HI1I1BI' prevents the pump from becomingairbound, as this action forces the liquidsfrom the periphery of therunner longitudinally of the conical extensiontowards its apex. Thisconversion of velocity head into pressurehead is thus very gradualand'positive', the pressureincreaslng towards the apex of the conicalextension 22 as the peripheral velocity. decreases.

as illustrated,any'pumped liquid which may enter the same, is when therunner 25 is ro- I ,tated, forced on the inner "surface of the flaringconical extension towards the apertures 30 and finds its way immediatelyback into a V the runner nearits periphery and part-alres' in'theflow ofthe incoming feed. If the runner is at a point of rest the conicalextension will immediately empty itself on rotation be- 'ing imparted tothe runner, thus the tendency is to maintain the bearing 10'clear of thepumped fluid at all'times during the operation of the device. 7

Should it be desired that the installation be mounted-with the shaft 12jin a vertical position and the runner 25 carried by the upperend'thereof, the flow offluidinto the hol- By making the conicalextension 22 hollow,

low portion of the conical extension 22 will be precluded by theintrapped air in the upper end of this extension.

It will be readily apparent that it is the combination of the hollowconical extension I lying'in spaced relation forming afluid passage andthe inner surface of the wall of the inner member flaring toward itsbase, a shaft projecting into'the hollow portion of the inner of saidmembers: and rotatably mounting the same, a bearing for said shaftlocated withinthe hollow portion OfSiLlCl inner hollow member, a fluidoutlet' -leadi-ng from the apex of the outer of said members, a pumprunner at the base of the inner member provided with a center inlet anda peripheral discharge, the latter communicating with one end of thefluid passage, a connection between the inner wall surface of the innermember and the runner, a runner casing provided' with afluid inlet, ahelical rib carried by the inner of' said conical members, and means forrotating the 1 conical member mounting said rib. I Q

2. A pump comprising a conical shell provided at its apex with a fluidoutlet, a conical member rotatably mounted within said shell I 'with'its wall in spaced relation to theshell wall, a helical rib carried bythe conical member and extending fromits base to apex,

means for feeding fluid under pressure to the base of the conicalmember, and a hearing for saidrotatablymounted conical member concealedwithin the conical member, the rotation of the conical membermaintainingthe fluid'pumped in a moving direction away from said bearing. I

I 3. A pump comprising a conical shell providedat its apex'with afluidoutlet, a hollow 'conic'al member rotatably mounted withinsaidshell with its wall in spaced relation'to the shell wall, a helicalrib carried by the conical member and extending from its base to apex,means for feeding fluid under-pressure to the periphery of the base ofthe conical member, and means for rotating the conical member, the innerwall surface of the'hollow conical inner member flaring toward saidfluid feedwhereby fluid entering the inner hollow conical memberisdischarged by centrifugal action from its base;

4. A pump comprising a conical shell provided at its base with a fluidinlet and'at, its

apex with a fluid outlet, a tubular bearing sleeve extending axiallyinto said shell and terminating short of its apex, a hollow conicalinner member rotatably mounted within said shell with its wall in spacedrelation to the conical shell wall and overlying the tubular sleeve, ashaft rotatable in the bearing sleeve and mounting the hollow conicalmember at a point inwardly removed from its apex, the inner wall surfaceof the hollow conical inner member flaring toward its base andcommunicating with the fluid inlet,. and e a helical rib carried bythe'surfaee of the inner 1 0 conical member. I c

In testimony whereof I have signed my name to this specification. i

, MAX KRAUT.

